import settings not doing anything

After importing my settings from another computer a lot of things don't change. Especially the colors butalso some othersettings.
Resetting to factoy settings also don't change colors back to default. What's going wrong?
I'm using version 9.1.

Ensure you don't have a second instance of HeidiSQL opened while importing your old sessions, and/or while resetting to factory settings.

The for me most important thing that's not changedw hile resetting or importing are the T-SQL code colors.
When resetting and importing the language, data appearance are reset. I did not check all things that changed or not. But the code colors are certainly not. Also the session backgroud color is not changed (minor issue).
And I have to restart after every reset or import. No problem but a message woould be nice.